<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>圣杯模式</title>
    <style>
        .wrap {
            width: 700px;
            margin: 0 auto;
            border: 1px solid #000;
        }

        .top,
        .foot {
            height: 50px;
            background: #cb87cb;
        }

        .foot{
            background: #4455aa;
        }

        .main {
            padding: 0 100px;
            overflow: hidden;
        }

        .main .left,
        .main .content,
        .main .right {
            float: left;
            position: relative;
            background-color: #544ef5;
            margin-bottom: -4000px;
            padding-bottom: 4000px;
            ;

        }

        .main .left {
            left: -100px;
            width: 100px;
        }

        .main .content {
            width: 100%;
            margin-left: -100px;
            background-color: #dd456d;
        }

        .main .right {
            left: 100px;
            width: 100px;
            margin-left: -100px;
        }
    </style>
</head>

<body>
    <div class="wrap">
        <div class="top"></div>
        <div class="main">
            <div class="left">Lorem ipsum dolor sit amet consectetur adipisicing elit. Nobis dolorem possimus tenetur nesciunt rerum obcaecati, optio iusto similique perspiciatis at libero non ea nisi sequi odit quia minima pariatur perferendis.</div>
            <div class="content">456<br>Lorem ipsum dolor, sit amet consectetur adipisicing elit. Tempora, odit ab. Sint expedita pariatur nobis fuga laudantium inventore sequi ipsa, aliquid impedit nam quidem dolorum! Inventore laudantium natus doloremque at?</div>
            <div class="right">Lorem ipsum dolor sit amet consectetur adipisicing elit. Voluptates deserunt eum debitis. Illo quam enim sapiente quae voluptatum vero illum sint dolores dicta laudantium et omnis totam officiis, dolorum nostrum!</div>
        </div>
        <div class="foot"></div>
    </div>
</body>

</html>